NASA has delayed the next Starliner spacecraft flight to 2026, postponing a crucial milestone for the Boeing-built vehicle intended as a backup to SpaceX's Dragon capsule. The agency initially targeted a launch by year's end, but engine issues and a failed 2024 test flight requiring SpaceX to rescue astronauts have caused significant delays. NASA is yet to decide if the next Starliner mission will carry astronauts or cargo, highlighting its current dependence on SpaceX for ISS crew transport.

Prepared by Jonathan Pierce and reviewed by editorial team.